Well like so many, after years and years of waiting THE WAIT IS FINALLY OVER. I have begun my build.
A short time ago I began a thread in the DIY Forum. That thread was called Bass for the 98%. And in essence my question was how much subwoofage would be sufficient for the 98% of us. Being that some of the guys on that forum have insane amounts of bass in their room I wanted to know if one isnt in the top 2 percent of nuts trying to blow a hole in the space/time continuum with their subwoofers how many would be enough?… For lack of a better idea for a name for this thread I decided to name my build after that thread. ( and in the end I decided 4 subs was enough for me.
So The Room is As follows.
Width - 22;4"
length - 25'7"
Height - 10'
5500 ft cubic. It is a finished room that is being repurposed into a theater/entertainment room
Here is the most recent sketchup model I have done.
The plan is a 140” diagonal CIH Acoustically Transparent Screen
The equipment list is as follows.
Sony Hw50es projector
Seymour CSXD screen
Denon X4000 reciever
Behringer Inuke nu4-6000 Amp for Subwoofers.
Mini DSP for subwoofer eq
Onix Rocket RS-850s fronts
Onix Rocket RS-200 center
Onix Rocket RS-750 signature surrounds
Onix Rocket RS -250 Bookshelf rear surrounds
4 Stereo integrity 18” D4 subwoofers in 4 cubic ft sealed Cabs (DIY)
( one sub in each corner)
Oppo 103D Blueray player.
I have not decided on Chairs yet so will wait till later down the road for that decision.
As far as sound proofing I will not be doing any. After exchanging emails with Ted white it did not appear to be something I would be pursuing for the following reasons.
Number 1. The layout of our home is an L shape single story. It is layed out such that the theater room is separated from the rest of the house by the garage. The theater room has no direct access to the rest of the home and so sound does not easily travel to the rest of home. Additionally the bedrooms are on the opposing end of the home so that helps a lot as well. There is also no issues whatsoever with sound travel through our hvac setup.
Number 2. We live on a 1.75 acre lot with our closest neighbor at about 300 feet. So the neighbors should not be a problem.
Number 3. My biggest concern in researching soundproofing is the small road about 80 ft from the room but I did some testing with a Sound pressure meter and measured 31 to 40 db AVG. ( A weighted) and 33-43 db ( C weighted.). I decided its something I can live with. Especially since the majority of time I will be using the room will be after dark when the traffic is minimal.
Number 4. The room has three large 4x6 windows, 1 entry door, and a 6 foot slider. Getting effective soundproofing on all these would be difficult/ costly/ or just plane ugly.
So in the end we decided to go without the soundproofing. Granted this room is not really the perfect room upon which to make a theater room but itss what I've got. so I just have to make it work...
Two windows behind screen wall will be plugged. smaller entry door will have window sealed. slider will have at a minimum blinds plus heavy light blocking drapes ( velvet??). remaining window will have light proof blinds plus heavy drapes ( velvet etc.) .
A. I am planning at this point to install bass trapping in the form or pink fluffy insulation behind the screen wall. From just above the corner loaded subwoofers and reaching to the ceiling.
B. And also behind screen wall along the ceiling where the upper part of the wall and ceiling meet.
C. will be plugging two 4x6 windows behind the screen wall with oc703 but will not be treating the entire back wall.
D. Will build a space between the built in rack and the small corner next to the smaller entry door. Will be stuffing that space for bass trapping as well.
E. All soffits will be stuffed with pink fluffy and the lower panels making up he bottom of the soffits will be fabric to allow for more bass trapping at the majority of corners where ceiling and walls join.
f. Will treat primary reflection points with panels ( oc703 or similar).
I have purchased a calibrated mic and have downloaded REW. So once I am up and running I will see then what if anything else needs to be addressed.
Here are some of the photos I have of the build so far.
Will post updates as I move along